The user restores its own HP. The amount of HP regained varies with the weather.

In-Depth Effect:

This move recovers its HP depending upon the weather. If no weather is in effect, it heals the user by 50% of their maximum Hit Points. If Sunny Day is in effect, this move heals the user by 66.66% of its maximum Hit Points and if Rain Dance, Hail or Sandstorm is in effect, this move heals the user by 25% of their maximum Hit Points